Optical fiber, optical fiber module and optical amplifier

Details Optical fiber, optical fiber module and optical amplifier Optical fiber, optical fiber module and optical amplifier

2006-08-01

2006-08-01

Le, Thien M. (Department: 2876)

Optical waveguides

Optical fiber waveguide with cladding

C385S126000

Reexamination Certificate

active

07085462

ABSTRACT:
An optical fiber whose value of a ratio of a dispersion to the dispersion slope ranges between 50 nm and 150 nm at the wavelength of 1590 nm. Also, a dispersion compensated optical fiber includes a depressed layer formed of at least one of a plurality of core layers covering the outer circumference of the center core. The depressed layer has −0.7% or less of a relative refractive index difference with the clad. The dispersion compensated optical fiber has the ratio of the dispersion to the dispersion slope falling within a range of between 30 nm and 80 nm at the wavelength of 1550 nm, or a dispersion value not larger than −20 ps
m/km, a dispersion slope not larger than −0.05 ps
m2/km, and an effective core cross sectional area Aefffalling within a range of between 8 and 13 μm2.

REFERENCES:
patent: 6009221 (1999-12-01), Tsuda
patent: 6445864 (2002-09-01), Jiang et al.
patent: 6477306 (2002-11-01), Kato et al.
patent: 6574407 (2003-06-01), Sillard et al.

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